Homework Help: Physics

Posted by Unknown on Sunday, November 8, 2009 at 9:25pm.

Sound is detected when a sound wave causes the eardrum to vibrate. Typically, the diameter of the eardrum is about 8.4 mm in humans. How much energy is delivered to your eardrum each second when someone whispers 20dB a secret in your ear?

Physics - bobpursley, Sunday, November 8, 2009 at 9:32pm
20dB above what? 1milliwatt , or the threshold of hearing.

I will be happy to critique your work.
Physics - Unknown, Sunday, November 8, 2009 at 9:39pm
I don't know...but this is what i was asked

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